Home / 102,422.57-153,656.41-31,345.75

Finding the Fourth Proportional to 102,422.57, 153,656.41 and 31,345.75

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Solution

The fourth proportional to 102,422.57, 153,656.41 and 31,345.75 is: 47,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,422.57 : 153,656.41 = 31,345.75 : x
  2. Step 2: Convert to fraction form
    102,422.57/153,656.41 = 31,345.75/x
  3. Step 3: Cross multiply
    102,422.57x = 153,656.41 × 31,345.75
  4. Step 4: Simplify right side
    102,422.57x = 4,816,476,018.40
  5. Step 5: Solve for x
    x = 4,816,476,018.40/102,422.57
  6. Step 6: Final answer
    x = 47,025.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.